Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
  • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
  • A61K8/89—Polysiloxanes
  • A61K8/891—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
  • A61K8/894—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone modified by a polyoxyalkylene group, e.g. cetyl dimethicone copolyol
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
  • A61Q1/02—Preparations containing skin colorants, e.g. pigments
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
  • A61Q1/02—Preparations containing skin colorants, e.g. pigments
  • A61Q1/04—Preparations containing skin colorants, e.g. pigments for lips
  • A61Q1/06—Lipsticks
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
  • A61Q1/02—Preparations containing skin colorants, e.g. pigments
  • A61Q1/10—Preparations containing skin colorants, e.g. pigments for eyes, e.g. eyeliner, mascara
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S424/00—Drug, bio-affecting and body treating compositions
  • Y10S424/05—Stick

Definitions

• the present invention relates to an oil-based solid cosmetic composition which provides excellent feel upon use, and beautiful make-up appearance for a prolonged period of time.
• incorporation of a volatile oil into a cosmetic composition is accompanied by a loss in the gloss of the composition over time, which is especially a problem in the case of lipsticks. Additionally, since the volatile oil evaporates over time, the shape of the lipstick becomes thinner, and the stability over time is poor.
• one object of the present invention is to provide an oil-based solid cosmetic composition which gives excellent feel during use, and prolonged beautiful appearance.
• a further object of the present invention is to provide an oil-based solid cosmetic composition which comprises one or more polyoxyalkylene modified organopolysiloxanes.
• an oil-based solid cosmetic composition comprising one or more polyoxyalkylene modified organopolysiloxanes and cosmetically acceptable pigments or oils or a mixture thereof.
• the present invention relates to an oil-based solid cosmetic composition which comprises one or more polyoxyalkylene modified organopolysiloxanes and cosmetically acceptable pigments or oils or a mixture thereof.
• polyether modified silicones is a compound represented by one of the following formulas (1) to (4): ##STR1## wherein R 1 to R 26 are the same or different from each other, and independently represent C 1 to C 32 linear or branched alkyl, a hydrogen atom or a phenyl group; R 1' to R 3' are the same or different from each other, and independently represent a C 1 to C 32 linear or branched alkyl group or a hydrogen atom; p, p1, p2 and p3 independently denote a number from 1 to 18; and x, x1, x2, x3, y, y1, y2, y3, m, m1, m2, m3, n, n1 and t are average numbers which make the proportion of the polyoxyalkylene group contained in the molecule from 1 to 50% by weight, preferably from 5 to 40% by weight.
• Preferred polyether modified silicones (1) to (4) are those which satisfy the following conditions:
• R 1 to R 26 C 1 to C 25 linear or branched alkyl, wherein a portion of them may be a hydrogen atom,
• R 1' to R 8' a hydrogen atom or c 1 to C 18 linear or branched alkyl
• n to n1 1 to 100
• R 1 to R 26 C 1 to C 22 linear or branched alkyl, wherein a portion of them may be a hydrogen atom
• R 1' to R 8' a hydrogen atom
• n to n1 1 to 50
• the polyether modified silicones (1) to (4) are commercially available from Nippon Unicar K.K., Shin-estu Kagaku Kogyo K.K., Toray Dowcorning Silicone K.K. or Toshiba Silicone K.K.
• an oil-based solid cosmetic composition of the present invention which comprises one or more of the polyether modified silicones (1) to (4) in a weight ratio of water to oil-based solid cosmetic composition of from 1:10 to 1:5 the relative viscosity of the composition increases to a value from 1.1 to 2.0 (relative to the viscosity of the water-free composition as 1). This increase in viscosity is especially favorable with respect to the feel of the makeup during use and prolonged beautiful appearance.
• the relative viscosity of the composition can be measured with an MR-3 Soliquid meter equipped with a cone plate (cone diameter: 1.798 cm, cone angle: 4.984 deg., Frequency: 1 Hz, 34° C.) manufactured by Rheology K.K.
• the polyether modified silicone of the present invention contains from 1 to 50% by weight, preferably 5 to 40% by weight, of a polyoxyalkylene group in the molecule in order to achieve excellent feel and prolonged beautiful appearance of the make-up. If the polyoxyalkylene groups are present outside this range, the effects of the invention cannot be obtained.
• the polyether modified silicones be contained in the cosmetic composition in an amount from 0.1 to 50%, more preferably from 5 to 30% by weight based on the total weight of the composition. Amounts less than 0.1% by weight will not provide a sufficient lifetime of make-up appearance, while amounts exceeding 50% by weight allow the feel of the make-up to deteriorate rapidly during use.
• oil-based solid cosmetic compositions according to the present invention contain one or more of the above-described polyether modified silicones, oil ingredients and pigments but be substantially free from water.
• the composition of the present invention be a non-aqueous composition.
• Oil ingredients which may be used in the present invention include solid oils, semi-solid oils and liquid oils, and they may be used in a mixture of two or more.
• the solid or semi-solid oils include Japan wax, hydrogenated beef tallow, carnauba wax, candelilla wax, rice wax, beeswax, ceresine wax, microcrystalline wax, paraffin wax, polyethylene wax, hydrogenated jojoba oil, lanolin, and vaseline.
• the amount of the oil used may be varied depending on the end use of the cosmetic composition, and is in the range from 1 to 90% by weight, preferably from 5 to 70% by weight.
• hydrocarbons such as liquid paraffin, liquid isoparaffin (liquid polyisobutylene) and squalene
• animal or vegetable oils of natural origin such as olive oil and jojoba oil
• silicone oils such as dimethylpolysiloxane
• synthetic esters such as isopropylmyristate.
• the amount of the liquid oil ingredient used depends also on the end use desired, and ranges from 1 to 90%, preferably from 5 to 70% by weight based on the total weight of the composition.
• Pigments which may be used in the present invention include conventional cosmetic pigments.
• the pigments include body pigments such as talc, sericite, mica, kaolin, silica, nylon powder, polyethylene powder and cellulose powder; coloring agents such as carbon black, titanium oxide, iron oxide, zinc oxide, ultramarine, prussian blue, chromium oxide, dyestuffs of the organic tar series and lakes; complex pigments such as titanated oxide and iron oxide-coated mica.
• the particle surface of these pigments may be optionally treated with silicones, higher fatty acids, higher alcohols, aliphatic esters, metallic soaps, amino acids or alkylphosphates. It is preferred that one or more of these pigments be contained in the solid cosmetic compositions of the present invention in an amount from 0.1 to 95%, preferably from 5 to 70% by weight based on the total weight of the composition.
• the oil-based solid cosmetic composition according to the present invention may optionally contain ingredients other than those described above as long as they do not detrimentally affect the properties of the composition.
• These optional ingredients include other conventional cosmetically acceptable substances, such as surfactants, pharmaceutically acceptable ingredients, preservatives, antioxidants, moisturizers, UV absorbers and perfumes.
• the oil-based solid cosmetic composition of the present invention may be prepared by any conventional process, such as by heating, blending or stirring the above described ingredients to form make-up cosmetics such as lipsticks, foundations, eye shadows and eye liners.
• the polyether modified silicones used in the oil-based solid cosmetic composition of the present invention have a specific chemical structure, and are in a liquid state when water is not present.
• the viscosity of the polyether modified silicone rapidly increases when a small amount of water (1 to 20% by weight) is added, and further addition of water eventually causes the polyether modified silicone to acquire a gel state. At this point, no more water can be absorbed.
• a panel consisting of 10 members used the lipsticks and evaluated them according to the following criteria:
• A Eight members or more out of ten evaluated as good.
• the lipstick according to the present invention provides excellent make-up appearance, and excellent ratings in the other evaluation areas.
• the waves and oil ingredients, listed in Table 3, were dissolved at 90° C., to which the pigments and perfume of Table 3 were mixed.
• the obtained mixture was cast in a metal mould, cooled down and charged into a container to prepare an oil-based foundation composition.
• the powder ingredients listed in Table 5 were mixed with a blender, into which a heated, melted mixture of the oil ingredients in Table 5 was sprayed. The resulting mixture was further blended. The resulting material was crushed, and compression-molded with a molding machine to obtain powder cake eye shadows.
• the lipsticks prepared in Examples 4 to 7 all provided excellent feel during use, and maintained beautiful make-up appearance for a prolonged period of time.
• the oil-base foundations prepared in Examples 8 to 10 all provided excellent feel during use, and maintained beautiful make-up appearance for a prolonged period of time.
• This powder eye shadow gave excellent feel during use, and maintained beautiful make-up appearance for a prolonged period of time.

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• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Birds (AREA)
• Epidemiology (AREA)
• Cosmetics (AREA)
• Compositions Of Macromolecular Compounds (AREA)

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Cited By (9)

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Citations (5)

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• 1991
  • 1991-12-26 JP JP3345107A patent/JP2754108B2/ja not_active Expired - Lifetime
• 1992
  • 1992-12-10 TW TW081109901A patent/TW271402B/zh not_active IP Right Cessation
  • 1992-12-10 EP EP92121084A patent/EP0548694B2/en not_active Expired - Lifetime
  • 1992-12-10 DE DE69217877T patent/DE69217877T3/de not_active Expired - Lifetime
• 1994
  • 1994-07-18 US US08/277,424 patent/US5650139A/en not_active Expired - Lifetime
  • 1994-12-14 US US08/357,064 patent/US5681551A/en not_active Expired - Lifetime

Patent Citations (5)

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